ECO-WORTHY 3500W 48V AIO Inverter
#8 in 120 VFull review
For a small 120 V cabin or shed system on a 48 V battery that needs a UL-listed unit for little money. Large arrays are better served by a 500 V input.
Amazon ECO-WORTHY $499.99$499.99
2.9/5
For a cabin, shed or backup circuit that needs 3.5 kW of 120 V power from a 48 V battery at a low price. Add a second unit later for 240 V.
- 3.5 kWOutput
- 48 VBattery
- 4,500 WSolar input
- 60 WIdle draw
- 2 yearsWarranty
Check price at Amazon
Price checked October 23, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- UL 1741 listed, which helps with inspections on a permitted 120 V install
- Runs from solar alone when no battery is connected
- Pair two later for 120/240 V, up to six for more power
- Under $700, among the cheapest UL-listed 48 V all-in-ones
Cons
- 225 V MPPT ceiling limits strings to a few panels in series
- About 60 W idle draw is heavy for a small system
- Two-year warranty is short for an inverter
The Growatt SPF TL LVM-US family
Every Growatt SPF TL LVM-US model we rank, smallest first. Ratings compare each against its own output.
| Model | Output | Rating | Price |
|---|---|---|---|
| Growatt SPF 3000TL LVM-US | 3 kW | 2.8/5 | - |
| Growatt SPF 3500TL LVM-US (this one) | 3.5 kW | 2.9/5 | $699 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its output. How we rank explains each one.
Specifications
| Model number | SPF 3500TL LVM-US |
|---|---|
| Output | |
| Output voltage | 120 V single-phase |
| Continuous output | 3,500 W |
| Surge | 7,000 W |
| Peak efficiency | 90% |
| Idle draw | 60 W |
| Transfer time | 10 ms |
| Parallel units | Up to 6 units |
| Solar | |
| Max PV power | 4,500 W |
| Max PV voltage (Voc) | 280 V |
| MPPT range | 120 to 225 V |
| MPPT trackers | 1 |
| PV current per tracker | 22 A |
| Runs without battery | Yes |
| Battery and grid | |
| Battery voltage | 48 V |
| Battery types | Lithium, lead-acid |
| Max charge current | 80 A |
| AC charge current | 40 A |
| Grid sell-back | No |
| Generator input | No |
| UL 1741 | Yes |
| Build | |
| App monitoring | Optional add-on |
| Enclosure | IP20 (NEMA Type 1) |
| Dimensions | 330 x 485 x 135 mm |
| Weight | 26.5 lb |
| Warranty | 2 years |
| Released | 2023-02 |
Alternatives in this output
SunGoldPower SPH302480A
#9 in 120 VFull review
A cheap 24 V inverter for cabins and RVs that can take long high-voltage panel strings. It cannot grow past 3 kW.
Amazon SunGoldPower $459$459
SunGoldPower SPH302460A
#11 in 120 VFull review
A UL-listed 3 kW 24 V inverter for RVs and small cabins with 12 V-style panels. Pick the SPH302480A for long high-voltage strings.
Amazon SunGoldPower $445$445
Compare
Compare the Growatt SPF 3500TL LVM-US with any other hybrid solar inverter →
More from Growatt: every Growatt product ranked.